package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class JDBCDemo7 {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(), "欢迎登录", "登录");
        try(Connection connection=DBUtil.getConnection()
        ) {
            String sql="SELECT id ,username,password,nickname,age " +
                       "FROM userinfo " +
                       "WHERE username=? AND password=? ";
            PreparedStatement ps=connection.prepareStatement(sql);

            ps.setString(1,userInfo.getUsername());
            ps.setString(2,userInfo.getPassword());

            ResultSet rs=ps.executeQuery();
            if(rs.next()){
                System.out.println("登录成功,欢迎你:"+rs.getString("nickname"));
            }else {
                System.out.println("登录失败，用户名或密码不正确");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
